Centrifugal cream-separator



(No Model.) 2 Sheets- Sheet 1.

O OHLSSON GENTRIPUGAL CREAM SEPARATOR.

Patented Nov. 9, 1397.

INVENTOR KW, ATTORNEYS 2 Sheets-Sheet 2.

(No Model.)

0. OHLSSON, I GENTRIPUGAL CREAM SEPARATOR.

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Wm I 4 4v; AT6RNZY$ Patented Nov. 9,

UNiTED STATES CENTRIFUGAL CEEAM EPARATGR.

SPECIFICATION forming part of Letters Patent No. 598,307, dated November 9, 1897.

Application filed June 19,1896,

To all? whom it may concern:

Beit known that I, OLQF OHLSSON, a citizen and increase the capacity of such separators.

partly in elevation.

This object is accomplished by means of a cylindrical partition fitted in the bowl and adapted to rotate With it, having inclined'surfaces converging together away from the center toward :the periphery of the bowl, with openings at the pointof convergence to per-' mit the outward and undisturbed passage of the blue milk, and having similar inclined surfaces converging toward the center of'the bowl, with openings at the points of convergenes to permit the inward and undisturbed flow of the cream.

My invention consists of the devices hereinafter morepartijcularly described,and claimed in the claims at the end of the specification.

Figure 1 is a vertical section through a cream separator embodying my improvement, with the partition partly in section and Fig. 2 is a plan View, partly in section. Fig. 3 is a vertical section of a modification.

Ais the bowl or" a centrifugal cream-separator, B, the central pipe for the inlet of the whole milk.

6 b are holes for the passage or the milk from the pipe B into the space beneath the partition h, and b are openings in the partition to permit the passage or the milk into the lower part of the bowl.

C is a partition which is preferably remov- .ao""fitted in the bowl and secured in it so that rotate with the bowl. This partition, as snown in Fig. 1, has a series of truncated'cone vctions c 0, each one having an opening (Z, and other series of truncated cones c 0', each one having an opening (1. The truncated cones c 0 point outward away from the center and toward the periphery of the bowl, and the truncated cones c 0 point inward toward the center of the bowl. The entire surface of the Serial No. 596,128. (No model.)

cones, the different series of outwardly or inwardly projecting cones being arranged intermediate with one another, as shown-in Fig. 1. Aspace surrounds the partition and furnishes a means iorthe escape upward of blue milk to the outlet-pipe F,-whe'noe it is discharged.

G- is the outlet-pipe for the discharge or the cream.

The surfaces oi'the truncated scones c c, whichv are nearer the center of the bowl, have in cli 11 ed surfaces coni er-gin towardthc openings (Z, away from the center and toward the: periphery of the howh Blue milk is forced outward by the centrifugal action of the bowl, down the said outwardconverging surfaces, to and through the openings (Z. The surfaces of the cones c c, which are farther froin the center oi the bowl and nearer its periphery, form inclined surfaces converging toward the center of the bowl. The cream that may still remain in the blue mill: in the space E is under the centrifugal action of the bowl, which is always greatest nearer its periphery, forced down these inward-conver ing surfaces to and through the opening (1'. in this passage it is comparatively undisturbed by any outward flow of blue milk, and the small lobules of butter, fat, or cream are brought together as the inclined sides converge togethc The smaller globules are thereby united or coalesced into larger globules, and are thus,

ftcr passing through the opening '(Z, better enabledto force their Way inward against the outiiowing blue milk. in this way a larger percentage of cream is extracted from the milk than in the ordinary separator.

In the ordinary separator the general tendency of the blue mill is to move in as nearly straight lines as possible to the mouth f of the blue-milk discharge-outlet F. In my improved device this tendency is overcome, as the blue milk tends to move outward toward the openings (Z and into the space E in horizontal lines. The capacity of the bowl -is thereby increased and a less quantity of cream is swept out by the blue milk in its flow outward toward the sides of the bowl,

and less is therefore discharged in the blue milk passing out through the pipe F, and loss than is the case with the ordinary creampartition 0 is preferably covered with these separator.

,ner edge of the urface H, but a space 7b is left between them for the inward passage of cream. The diflerent surfaces H H H &c., are secured to one another in any suitable manner. As shown in the drawings, they are soldered to the uprights a: (Shown in dotted lines.) The operation of the modification shown in Fig. 3 is precisely similar to the device shown in Fig. l. The surfaces E and H which are nearer to the center of the bowl form inclined surfaces converging cutward toward the periphery of the bowl. Down these surfaces the blue mill; passcs,and thence out through the openings 15 i into the space E, and thence is discharged through the pipe F. The surfaces H H which are farther from the center of the bowl form inward-inclined surfaces converging inward toward the center of the bowl. Any cream that may be in the blue milk inthe space E is through the centrifugal action of the bowl, which is greater at the periphery than elsewhere,forced inward down these converging surfaces and through the openings h. The smaller globules-of cream are thereby united or coalesced, and are thus better able to force their way in- Ward after passing through the openings it against the out-flowing blue milk. They are assisted in this inward movement by means of the'upwaid extension of the surfaces ll-inward and upward beyond the end of the surfaces H. lVhile passing along this extension they are protected from the outward flow of the blue milk.

What I claim as new, and desire to secure by Letters Patent, is-

l. The combination with a bowl of a centrifugal separator, having a supply-pipe for the whole milk and discharge-pipes for the ing on its outer surface truncated cones provided with openings for the outward escape of the blue milk, and having on its inuersurface truncated cones having openings for the escape inward of the cream, substantially as set forth.

Z. The combination with the bowl of a contrifugal separator having a supply-pipe for the Whole milk and discharge-pipes for the blue milk and the cream, of a cylindrical partition 0 having on its outer surface a series of truncated cones cc provided with openings for the outward escape of the blue milk and havingon its inner surface'truncaied cones c c having openings for the escape inward of the cream, substantially as set forth.

In testimony ivhereof I have signed my 'name to this specification in the presence of two subscribing witnesses.

OLOF OIILSSON.

\Vitnesses:

CHARLES J. PUPKI, EDWIN SEGER.

'blue milk and the cream, of a partition hav- 

